Restrict requested fields in 'Dataset.exists' API request.

tseaver · tseaver · commit 43bafba08a3c · 2015-07-28T12:12:37.000-04:00
Addresses: #1018 (comment)
diff --git a/gcloud/bigquery/dataset.py b/gcloud/bigquery/dataset.py
@@ -251,7 +251,8 @@ def exists(self, client=None):
         client = self._require_client(client)
 
         try:
-            client.connection.api_request(method='GET', path=self.path)
+            client.connection.api_request(method='GET', path=self.path,
+                                          query_params={'fields': 'id'})
         except NotFound:
             return False
         else:
diff --git a/gcloud/bigquery/test_dataset.py b/gcloud/bigquery/test_dataset.py
@@ -191,6 +191,7 @@ def test_exists_miss_w_bound_client(self):
         req = conn._requested[0]
         self.assertEqual(req['method'], 'GET')
         self.assertEqual(req['path'], '/%s' % PATH)
+        self.assertEqual(req['query_params'], {'fields': 'id'})
 
     def test_exists_hit_w_alternate_client(self):
         PATH = 'projects/%s/datasets/%s' % (self.PROJECT, self.DS_NAME)
@@ -207,6 +208,7 @@ def test_exists_hit_w_alternate_client(self):
         req = conn2._requested[0]
         self.assertEqual(req['method'], 'GET')
         self.assertEqual(req['path'], '/%s' % PATH)
+        self.assertEqual(req['query_params'], {'fields': 'id'})
 
     def test_reload_w_bound_client(self):
         PATH = 'projects/%s/datasets/%s' % (self.PROJECT, self.DS_NAME)
